Currently available resins for normal and demanding composite applications often suffer from swelling and/or degradation caused by polar organic solvents and hot, wet environments. One possible means of overcoming these disadvantages is to use all-hydrocarbon matrices that inherently limit interaction and penetration by both organic solvents and water. Polybutadiene is an example of a resin whose inherent hydrophobicity provides excellent hot-wet stability and long term resistance to moisture and saline ...
Bis(vinylbenzyl)ether (BVE) and bis(vinylbenzyl)thioether (BVT) have been synthesized from vinylbenzyl chloride in yields greater than 90%. The onset/peak temperatures for thermal cure observed by first-run DSC scans were 80 deg C/11O deg C and 120 deg C/190 deg C, respectively, for BVE and BVT with no Tg in the second run. FT-IR and solid state NMR data indicated that cure occurred mainly through vinyl addition polymerization with high conversions. Composites ...
Bis(vinylbenzyl ether) and bis(Vinylbenzyl thioether) have been synthesized from a meta/para mixture of vinylbenzyl chloride. Crude yields of greater than 90% were obtained for both VBE and VBT. The onset and peak temperatures for thermal cure (as observed by DSC) were 80 deg C/11O deg C, and 120 deg C/190 deg C, respectively. Both resins did not exhibit a T, in the second DSC run due to high crosslink density. ...
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